Air-line lubricator for pneumatic tools



Sept. 16, 1941. A, H. SKAER 2,255,824

AIR-LINE LUBRICATOR FOR PNEUMATIC TOOLS Filed Nov. 16, 1938 INVENTOR.

BY CYIT/YL/F H. S/(cm B7 AL MW ATTORNEY.

Patented Sept. 16, 1941 UNITED STATES PATENT oFFICEQf AIR-LINE LUBRIOATOR FOR PNEUMATIC TOOLS Arthur H. Skaer, Huntington Park, Calif., assignor to Independent Pneumatic Tool 00., Chicago, III., a corporation of Delaware Application November 16, 1938, Serial N0. 240,771

Claims.

My invention relates to a lubricator to be positioned in the air line to pneumatic tools for carrying lubricants with the air supplied to the tool for lubricating the tool, particularly the parts contacted bythe air and the objects of my invention are:

First, to provide a lubricator of this class in which a fine spray of oil is injected into the air in the air line in its passage to the air tools;

Second, to provide a lubricator of this class in which the quantity flow of the oil relative to the air flow may be easily adjusted and regulated;

Third, to provide a lubricator of this class which will substantially empty by automatic action of the air passage;

Fourth, to provide a lubricator of this class in which there is ejector action caused by the flow of the air for drawing the oil in spray form into the air in its passage;

Fifth, to provide a lubricator of this class which is reversible and will operate from either end, the parts being duplicates at the opposite ends of the lubricator; and

Sixth, to provide a lubricator of this class which is very simple and economical of construction, easy to operate, easy to apply, efficient in its action and which will not readily deteriorate or get out of order.

With these and other objects in view as will appear hereinafter, my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawing and to the characters of reference thereon which form a part of this application in which:

Figure 1 is a diagrammatic. view of my lubricator shown positioned in the air supply line to a pneumatic tool; Fig. 2 is an enlarged sectional view taken from the line 2-2 of Fig. 1 showing members 5, feed tubes 6 and air supply line I constitute the principal parts and portions of my air line lubricator for pneumatic tools.

The outer casing member I is hollow cylindrical in shape and provided with reduced ends Ia which gradually taper to hexagon shaped ends lb which are internally threaded at lc adapted to receive the threaded ends of the separate sections of the air feed line I as shown in Fig. 1 of the drawing.

Positioned inwardly of this outer casing member I is a similarly shaped inner casing member 2 which is spaced from the inner wall of the casing member I leaving a space 2a between the casings I and 2, and these casings I and 2 are secured together preferably integrally by means of connecting sections 212 and 2c which are round connecting sections, leaving passage for the air around said sections and through the space 2a. The section 20 and. the members I and 2 are provided with a threaded opening 201 in which is screw threaded a filler plug 3. Through the opening in which this filler plug 3 is positioned the'lubricating oil is positioned in the inside of the casings 2 in the chamber 2c. The opposite ends of the inner casing 2 are provided with flange portions 2 which are provided with central openings with screw threads 2g. Screw threaded in these openings 29 are the nozzle bushings 4 which are provided with flanged edges formed with spanner notches 4a on opposite sides as shown in Fig. 4 of the drawing. These bushings 4 are also provided with annular channels 4b which are oil conducting channels and communicating with these oil conducting channels in the bushings 4 are small oil conducting passages 40 which are provided with turns at their ends which extend inwardly toward the center of the members 4. These bushings 4 are also provided with a central bore 4d in which are revolubly mounted adjustable nozzle members 5. These nozzle members 5 are provided at their inner ends with reduced extended portions 5a upon which are mounted springs 5b interposed between washers 5c and 5d, the outer washers 50 being supported on the reduced portion 5a by means of cotter pins 5e, thus providing tension on the nozzle members 5. These nozzle members 5 are provided with heads 5 with slots 59 therein adapted to receive a screw driver or other member for turning the nozzle member 5 for adjusting. These members 5 are also provided with central longitudinally extending holes 5h which extend from these slots 5g inwardly some distance in the center of the members 5 and.

. .4 on the head end of the member 5.

' it is of the same area as the larger hole m in the member 5. 'The inner ends of the bushings 4 are provided with bevelled portions 4e in which are positioned holes 4] in which are secured the inner ends of the feed tubes 6 which are substantially S shape with holes there-1 Having thus described my invention, what I claim as new and desire to secure by Letters Patthrough of the same capacity as the holes 5m and 40 which holes are designated 6a and these. holes 6a communicate with the channel portion 41) by means of holes 49. This member 4 is also provided with an indicating; line 4h which is adapted to coincide with the lines I, 2, 3 and These lines I, 2, 3 and 4 are in alignment-with the holes 52', 57', 5k. and 5m in the member 5 shown best in Fig. 3 of the drawing and indicating the varying sized holes which. gradually increase in size from fiz' tofim. a

-The operation of my air line lubricator for pneumatic tools is substantially asfollows;

Oil iseplaced in the inner casing 2 through theopening in which the filler cap 3' ispositioned, .which is of the proper constituency 'to form aspray to "be carried by the air in its passage to, the pneumatic tool to. be lubricated.

The-nozzle members 5' are adjusted by turning the members 5 by means of a screw driver or other similar'tool so that the proper sized opening 5iv to 5m registers with the opening 40 in the bushing members 4. Then with the air passing throughthe: space 2a. between thecasing mem hers ..I. and 2, some of i the air enters the holes 5n and passes'through the passages 40, annular passages 42:, then the holes 4g and through the feedtube 6 and forcing oil out through the oppnsitetube 6 atltheopposite endtaking the re verse'direction'. outwardly through the openings 5h- JAt the. same time. the passage of :air past thelnozzle. opening. 511., forms anv injection action which tends to draw theoil and spray the same inafine spray form which is absorbed by-the air and passes'to the tool tobe lubricated. If more oil isrrequired' dependent upon. the tool. tobe lubricated and the pressure of air, the members imay be turned so that the holes 51', 57c or 5111.

register with the openings 40, varying the quam tityof; oil sprayed into the. air supply. line .for lubrication purposes.

'H'Ihough I have. shown and. described; a particular construction, combination and: arraneement of parts and portions, I do. not wish tobe limited tothis particular construction, combination; and arrangement but desire to include in the scope of my invention theconstruction, com bination and. arrangement substantially as set .forth in the appendedclairns.

ent is: r r

1. In an air line lubricator for pneumatic tools of the class described, the combination of a pair of hollow cylindrical casings one placed within the other in spaced relation to each other and rigidly connected, a filling opening communicating from the exterior of the outer casing to the interior of the inner casing and a plurality of varying sized adjustable passage means in each extended end of the inner casing.

2. In an air line lubricator for pneumatic tools of the class described, the combination of a pair of hollow cylindrical casings one placed within the otherin spaced relationto each other'and rigidly connected, a filling opening communicating from the exterior of the outer casing to the 7 interior of the inner casing and a plurality of varying sized adjustable passage means in each extended end of the inner casing including aplurality of tubes at bothendsextendingto near the V inner side of said inner casing m'emben 3. In an air line lubricatorfor pneumatic tools of the class. described, the-combination of an outer air passage casing, an inneroil container in spaced.relationinternally thereof, ipassage defining. means innoppositeends of said inner oil container communicating. with theinterior thereor and shiftably. mounted variable sized passage sage openings'positioned in each endof said innercasing and passage defining means communi catingwith one only of saidtvariable sized pas+ sage openings and with. theinterior. of said inner casingat each end;

- t 5,111v an airline Iubricatonfor pneumatic tools of the class described, the combmationof: an

outer a r passa e casin an i n r ca in spaced relation internally thereof,. a: revoluble nozzle member provided With Variable sizedpassa e oncn ngsnositioned in eachendof said in, ner asine p ssa e. defining means communicatin w th e nly of said yar'iable. sized assage openings and; with; theinterior of said inner (1315+.

g. at ach end, and sin lepaSsage definin means ommunicatin with said-variable sized p s ge p ni a a dtheout r end of aid nozz em ry H. SKAER. 

